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CVE-2026-54275 AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections

🗓️ 22 Jun 2026 16:34:56Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

TLS hostname check may be bypassed on reused HTTPS connections in AIOHTTP before 3.14.1 when per-request hostnames differ.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54275
22 Jun 202616:34
attackerkb
Chainguard
CVE-2026-54275 vulnerabilities
16 Jun 202620:22
cgr
CVE
CVE-2026-54275
22 Jun 202616:34
cve
EUVD
EUVD-2026-38312
22 Jun 202616:34
euvd
Github Security Blog
aiohttp: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
15 Jun 202620:11
github
NVD
CVE-2026-54275
22 Jun 202618:16
nvd
OSV
CGA-7RC4-CR5C-MXF4
16 Jun 202623:30
osv
OSV
GHSA-4M7W-QMGQ-4WJ5 aiohttp: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
15 Jun 202620:11
osv
OSV
MINI-4M8Q-C56P-C9HH
16 Jun 202617:23
osv
OSV
MINI-68WJ-9J26-JJ3P
16 Jun 202617:23
osv
Rows per page
[
  {
    "vendor": "aio-libs",
    "product": "aiohttp",
    "versions": [
      {
        "version": "< 3.14.1",
        "status": "affected"
      }
    ]
  }
]

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